Second decimal point isn't displayed

By default the calculator is set to display two digits after the decimal point (for dollars and cents). If you'd rather have no digits after the decimal point, press 2nd [FORMAT] 0 .

Alternatively, you can press 2nd [FORMAT] 9 for floating decimal.

To access Format option press [2nd][FORMAT]. The DEC indicator appears with the selected number od decimal digits. To change the number of decimal digits, type in a number between 0 and 9 and press ENTER.
Press [2nd][SET]. To return to stadard calculator mode press [2nd][QUIT].

Press 2nd [FORMAT] 9 for floating decimal display mode.

You can also use 0-8 to round to that number of digits after the decimal point.

Press 2nd [FORMAT] 9 to select floating decimal display. If you want a fixed number of digits, press 2nd [FORMAT] and that number (0-8).

By default the BAII Plus displays only two decimal places. This is not enough. Personally, I like to see five decimal places, but you may prefer some other number. To change the display, press the 2nd key, then the decimal point key, and, when prompted, enter the number of digits you would like to see displayed. You must then press the Enter key to lock in your choice. I would press 2nd, ., 5, Enter to display 5 decimal places. Now press 2nd, CPT to return to a blank screen. Problem solved.

One other adjustment is important. The BAII Plus comes from the factory set to assume monthly compounding. That's fine, I suppose, but its better to set it to assume annual compounding and then make manual adjustments when you enter numbers. Why? Well, the compounding assumption is hidden from view and in my experience people tend to forget to set it to the correct assumption. Of course, most people don't recognize a wrong answer when they get one, so they blithely forge ahead. To fix this problem press 2nd then I/Y and enter 1 when prompted. Now press Enter and then 2nd, CPT to return to a blank screen. Problem solved.

Do you mean four places behind the decimal point? Page 21 describes setting for fixed decimal point 0 thru 9 places to the right.
http://education.ti.com/downloads/guidebooks/graphing/83p/83m$book-eng.pdf

Hello,
Press [MODE]. Use arrow down to go to second line Float. Use left arrow key to move cursor to a number other than zero and press [ENTER]. If you highlight 2 your results will have 2 decimal digits, but if 0 is highlighted all results will be integers (no decimals).
Hope it helps.

Press 2nd [FORMAT] and then a digit representing the number of places to the right of the decimal point you want. Use 9 for floating decimal.

Hello,
There is no fraction button. Any division of two integers you do is represented as a decimal number. If you want your fraction to remain a fraction you enter it as follows
7[ / ] 19 [ MATH][1:ToFrac] [=] displays 7/19
If you want to convert a decimal number into a proper fraction press [MATH][1:ToFrac] .
Exemple 7/19 [ENTER] gives .36842105. If without doing anything else, you press [MATH][1:ToFrac] you recover 7/19.
There are limitations related to the number of decimal digits in the floating point number.
.3684 [MATH][1:ToFrac][=] gives 921/2500 but
.36842 [MATH][1:ToFrac][=] gives .36842 : it is not converted to fraction.

Hope it helps

Your BA II PLUS stores numeric values internally to an accuracy of 13 digits. However, the numbers it displays depends on the number of decimal places to which you have it set (choice of 0–9 or floating decimal). To set the number of decimal places displayed to three: hit [2ND][FORMAT][3][ENTER]This setting also continues indefinitely (even though the calculator is turned off and on) until it is changed.